import { Compartment } from '@codemirror/state';
import { EditorView } from '@codemirror/view';
import { type MutableRefObject } from 'react';
/**
 * Configures the placeholder functionality on the editor.
 * @param placeholderText - string to be used as placeholder text for editor
 * @param viewRef - Ref object for the editor
 * @param placeholderCompartment -
 */
export declare const configurePlaceholder: (placeholderText: string | undefined, viewRef: MutableRefObject<EditorView>, placeholderCompartment: Compartment) => void;